diff options
| -rw-r--r-- | hw/lan9118.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/hw/lan9118.c b/hw/lan9118.c index 2dc8d18549..0ae16d4122 100644 --- a/hw/lan9118.c +++ b/hw/lan9118.c @@ -228,6 +228,12 @@ static void lan9118_update(lan9118_state *s) if ((s->irq_cfg & IRQ_EN) == 0) { level = 0; } + if ((s->irq_cfg & (IRQ_TYPE | IRQ_POL)) != (IRQ_TYPE | IRQ_POL)) { + /* Interrupt is active low unless we're configured as + * active-high polarity, push-pull type. + */ + level = !level; + } qemu_set_irq(s->irq, level); } @@ -294,8 +300,7 @@ static void phy_reset(lan9118_state *s) static void lan9118_reset(DeviceState *d) { lan9118_state *s = FROM_SYSBUS(lan9118_state, sysbus_from_qdev(d)); - - s->irq_cfg &= ~(IRQ_TYPE | IRQ_POL); + s->irq_cfg &= (IRQ_TYPE | IRQ_POL); s->int_sts = 0; s->int_en = 0; s->fifo_int = 0x48000000; @@ -904,7 +909,8 @@ static void lan9118_writel(void *opaque, target_phys_addr_t offset, switch (offset) { case CSR_IRQ_CFG: /* TODO: Implement interrupt deassertion intervals. */ - s->irq_cfg = (s->irq_cfg & IRQ_INT) | (val & IRQ_EN); + val &= (IRQ_EN | IRQ_POL | IRQ_TYPE); + s->irq_cfg = (s->irq_cfg & IRQ_INT) | val; break; case CSR_INT_STS: s->int_sts &= ~val; |